Which is the smallest entity in the following list?
A. Molecule
B. Electron
C. Nucleus
D. Atom
Answer: B
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Phase Angles: A 50-? resistor is placed in series with a 40-mH inductor. At what frequency will the current in this circuit lag the applied voltage by exactly 45°?
Fill in the blank(s) with the appropriate word(s).
If Earth's mass were suddenly and magically reduced to half its present value, the magnitude of Earth's acceleration about the Sun would
A. be reduced by a factor of 4. B. be reduced by a factor of 2. C. remain the same. D. increase by a factor of 2.
When humans get cold, they shiver in order to increase their body temperature. Which of the key properties of life is this an example of?
A) growth and development B) reproduction C) order D) response to environment
Production of energy from geothermal sources involves generation of significant pollution
What will be an ideal response?